Oquizy

Xinyi dissolves sodium chloride in water and tests conductivity. It conducts electricity. Why?

The Na⁺ and Cl⁻ ions are free to move The salt contains delocalised electrons The sodium metal reacts with water Water contains free electrons

Which of the following correctly describes the structure of poly(ethene)?

Ionic lattice of repeating ions Lattice of positive ions in a sea of electrons Long chains of covalently bonded atoms Simple molecules held by weak forces

Which pair of elements is most likely to form an ionic compound that exists as a solid at room temperature (RTP)?

Aluminium and chlorine Carbon and oxygen Hydrogen and fluorine Sodium and hydrogen

John says graphite is a good lubricant and a good conductor. Which statement explains this?

It contains ionic bonds It has free electrons and layers that can slide It has weak bonds between carbon atoms Its atoms form neutral molecules

In an experiment, a substance has the following properties: - Does not conduct electricity in solid or liquid state - Has a low melting point - Exists as discrete molecules What type of structure does this substance have?

Giant covalent Ionic lattice Metallic lattice Simple molecular

Quiz: Chemistry - Chemical Bonding